Mammillaria species ?

Mammillaria species ?;

unid-TQ09:  Please identify this cactus with amazingly beautiful flowers.
Is this some cultivar of Mammillaria lindsayi?
Hmm.... doesn't look close enough. I am not good at cacti, so can't be sure too.
Yes a cacti may be Mammillaria grahamii or its hybrid.
I had it in my garden. Very interesting in the sense, the spines were hooked and hence if it gets stuck on anything, it used to break off the mother plant. May be a kind of vegetative dispersal.

Mammillaria grahamii has pink flowers. Many Mammillaria species have been suggested for this plant, but did not agree well enough.
efloraindia: 151111 BRS169:
Pl. find the attached file contain a cactus for id. request.
Location: NBNP Garden, Anaikatti, (640 MSL) Coimbatore Dist.,
May be Mammillaria sp